Sanford Nacht to president-chief operating officer, New World Coffee & Bagels, New York, after a one-year stint as consultant to the company, which last month acquired Manhattan Bagel, Eatontown, N.J., in conjunction with that chain's emergence from Chapter 11 bankruptcy protection. Mr. Nacht takes over the president title from Chairman-CEO Ramin Kamfar. The chief operating officer title is new.